Electrochemical sensor for nitrite using a glassy carbon electrode modified with gold-copper nanochain networks

被引：77
|
作者：
Huang, Su-Su [1 ]
Liu, Li [2 ]
Mei, Li-Ping [1 ]
Zhou, Jia-Ying [1 ]
Guo, Fei-Ying [1 ]
Wang, Ai-Jun [1 ]
Feng, Jiu-Ju [1 ]
机构：
[1] Zhejiang Normal Univ, Coll Geog & Environm Sci, Coll Chem & Life Sci, Jinhua 321004, Peoples R China
[2] Jinhua Agr Prod Qual Comprehens Supervis & Inspec, Yongkang St 209, Jinhua 321017, Peoples R China
来源：
MICROCHIMICA ACTA | 2016年 / 183卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Metformin; Bimetallic structures; Cyclic voltammetry; High-resolution TEM; Annular dark-field scanning TEM; GRAPHENE OXIDE NANOSHEETS; OXYGEN REDUCTION REACTION; AUCU ALLOY NANOPARTICLES; SENSITIVE DETERMINATION; FACILE SYNTHESIS; ELECTROCATALYTIC REDUCTION; AMPEROMETRIC SENSOR; IONIC LIQUID; NANOTUBES; H2O2;
D O I：
10.1007/s00604-015-1717-z
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Bimetallic gold-copper nanochain networks (AuCu NCNs) were prepared by a single-step wet-chemical approach using metformin as a growth-directing agent. The formation mechanism was investigated in detail, and the AuCu NCNs were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The nanocrystals were deposited on glassy carbon electrode and this resulted in a highly sensitive sensor for nitrite. Features include a low working potential (best at 0.684 V vs. SCE), fair sensitivity (17.55 mu A mM(-1)), a wide linear range (0.01 to 4.0 mM), a low detection limit (0.2 mu M, S/N = 3), and superior selectivity as compared to other sensors.
引用
收藏
页码：791 / 797
页数：7
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